Well, bitcoins might be less accessible if most of the people would not want to sell them, the price would go up even more dirastically. In terms of access, they still will be traded on exchanges so if you've got fiat, you can buy it.
maybe for now crypto currencies are difficult to access because there might be legality problems, if cryptocurrencies are recognized by all countries and legality can be done it might be easily accessible because cryptocurrencies are created following the development of efficient and transparent practical technology
right now , most countries are already accepted the use of cryptos and on the future im expecting that the remaining countries will now also follow the trend , that why i believe bitcoin and other cryptos will be more easier to access and use in the future .
our technology is also a reason on why cryptos can be easily accesible in the future becuase there will be super computers and faster internet coverage that will be implemented .